diff --git a/python-temel/radd.py b/python-temel/radd.py
new file mode 100644
index 0000000..410958b
--- /dev/null
+++ b/python-temel/radd.py
@@ -0,0 +1,24 @@
+class Sample:
+    def __init__(self, a):
+        self.a = a
+
+    def __add__(self, s):
+        if isinstance(s, Sample):
+            return Sample(self.a + s.s)
+        if isinstance(s, int):
+            return Sample(self.a + s)
+
+    def __radd__(self, a):
+        return self.a + a
+
+    def __str__(self):
+        return str(self.a)
+
+a = 10
+s = Sample(10)
+
+result = s + a           # s.__add__(a)
+print(result)
+
+result = a + s           # s.__radd__(a)
+print(result)
diff --git a/python-temel/radd.py~ b/python-temel/radd.py~
new file mode 100644
index 0000000..844236e
--- /dev/null
+++ b/python-temel/radd.py~
@@ -0,0 +1,23 @@
+class Sample:
+    def __init__(self, a):
+        self.a = a
+
+    def __add__(self, s):
+        if isinstance(s, Sample):
+            return Sample(self.a + s.s)
+        if isinstance(s, int):
+            return Sample(self.a + s)
+
+    def __radd__(self, a):
+        return self.a + a
+
+    def __str__(self):
+        return str(self.a)
+
+a = 10
+s = Sample(10)
+
+result = s + a           # s.__add__(a)
+print(result)
+
+result = a + s           # s.__radd__(a)